UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Real-time multi-length scale chemical tomography of fixed bed reactors during the oxidative coupling of methane reaction

Vamvakeros, A; Matras, D; Jacques, SDM; di Michiel, M; Price, SWT; Senecal, P; Aran, MA; ... Beale, AM; + view all (2020) Real-time multi-length scale chemical tomography of fixed bed reactors during the oxidative coupling of methane reaction. Journal of Catalysis , 386 pp. 39-52. 10.1016/j.jcat.2020.03.027.

[img] Text
Beale_Manuscript_revised.pdf - Accepted version
Access restricted to UCL open access staff until 19 April 2021.

Download (2MB)

Abstract

In this work, we present the results from multi-length-scale studies of a Mn-Na-W/SiO2 and a La-promoted Mn-Na-W/SiO2 catalyst during the oxidative coupling of methane reaction. The catalysts were investigated from the reactor level (mm scale) down to the single catalyst particle level (μm scale) with different synchrotron X-ray chemical computed tomography techniques (multi-modal chemical CT experiments). These operando spatially-resolved studies performed with XRD-CT (catalytic reactor) and multi-modal μ-XRF/XRD/absorption CT (single catalyst particle) revealed the multiple roles of the La promoter and how it provides the enhancement in catalyst performance. It is also shown that non-crystalline Mn species are part of the active catalyst component rather than crystalline Mn2O3/Mn7SiO12 or MnWO4.

Type: Article
Title: Real-time multi-length scale chemical tomography of fixed bed reactors during the oxidative coupling of methane reaction
DOI: 10.1016/j.jcat.2020.03.027
Publisher version: https://doi.org/10.1016/j.jcat.2020.03.027
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Imaging, Xrd, Operando, Catalyst, Xrf, Micro, In situ
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10095656
Downloads since deposit
1Download
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item